臭氧—活性炭工艺去除饮用水中典型内分泌干扰物试验研究

Pilot study on removal of typical endocrine disrupting chemicals from drinking water using ozone-GAC process

通过对臭氧—活性炭工艺和活性炭吸附等温线的研究，探讨了臭氧活性炭工艺去除饮用水中微量典型内分泌干扰物的可行性。壬基酚（NP）、辛基酚（OP）和双酚A（BPA）被选作目标物质。研究发现臭氧氧化能去除30％以上的NP、OP和BPA；活性炭对NP、OP和BPA也有良好的去除效果，在空床停留时间4～12min条件下能完全去除水中未被臭氧氧化的NP、OP和BPA；吸附等温线的数据可以用Freundlich公式拟合，并用来估算活性炭的饱和时间。试验证明臭氧—活性炭工艺是去除饮用水中微量典型内分泌干扰物的有效方法。

This study investigated the feasibility of using ozone-GAC process to remove typical endocrine disrupting chemicals from drinking water through a batch-scale study and adsorption isotherms. Nonylphenol （NP）, Otylphenol （OP） and Bisphenol A （BPA） were selected as the representative of endocrine disrupting chemicals. Results indicated that ozonation remove more than 300% of NP, OP and BPA, GAC absorbed all the NP, OP and BPA that had not been oxidized by ozone at the condition of the empty bed contact time from 4 to 12 minutes. The isotherms for GAC were successful correlated by Freundlich equation and the data was used to estimate GAC service time. The results indicated that ozone-GAC process is a feasible way to remove NP, OP and BPA from drinking water.